Minor style corrections

flask_admin/contrib/sqla/tools.py

@@ -38,8 +38,8 @@ def is_inherited_primary_key(prop):
         :return: Boolean
         :raises: Exceptions as they occur - no ExceptionHandling here
     """
-    return len([column for column in prop.columns if column.primary_key]) == len(prop.columns) and \
-                len([column for column in prop.columns if column.foreign_keys]) == len(prop.columns)-1
+    return (len([column for column in prop.columns if column.primary_key]) == len(prop.columns) and
+            len([column for column in prop.columns if column.foreign_keys]) == len(prop.columns) - 1)
 
 def get_column_for_current_model(prop):
     """